b) N,N-dialkyl(Me, Et, n-Pr ou i-Pr)phosphoramidocyanidates de O-alkyle (égal ou inférieur à C10, y compris cycloalkyle), p. ex. Tabun : N,N-diméthylphosphoramidocyanidate de O-éthyle (CAS 77-81-6);
(b) O-Alkyl (equal to or less than C10, including cycloalkyl) N,N-dialkyl (Methyl, Ethyl, n-Propyl or Isopropyl) phosphoramidocyanidates, e.g., Tabun: O-Ethyl N,N-dimethyl phosphoramidocyanidate, (CAS 77-81-6);